1#!/usr/bin/env python3 2# SPDX-License-Identifier: GPL-2.0 3 4import os 5import random, string, time 6from lib.py import ksft_run, ksft_exit 7from lib.py import ksft_eq, KsftSkipEx, KsftFailEx 8from lib.py import EthtoolFamily, NetDrvEpEnv 9from lib.py import bkg, cmd, wait_port_listen, rand_port 10from lib.py import ethtool, ip 11 12remote_ifname="" 13no_sleep=False 14 15def _test_v4(cfg) -> None: 16 cfg.require_ipver("4") 17 18 cmd("ping -c 1 -W0.5 " + cfg.remote_addr_v["4"]) 19 cmd("ping -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote) 20 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["4"]) 21 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["4"], host=cfg.remote) 22 23def _test_v6(cfg) -> None: 24 cfg.require_ipver("6") 25 26 cmd("ping -c 1 -W5 " + cfg.remote_addr_v["6"]) 27 cmd("ping -c 1 -W5 " + cfg.addr_v["6"], host=cfg.remote) 28 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.remote_addr_v["6"]) 29 cmd("ping -s 65000 -c 1 -W0.5 " + cfg.addr_v["6"], host=cfg.remote) 30 31def _test_tcp(cfg) -> None: 32 cfg.require_cmd("socat", remote=True) 33 34 port = rand_port() 35 listen_cmd = f"socat -{cfg.addr_ipver} -t 2 -u TCP-LISTEN:{port},reuseport STDOUT" 36 37 test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536)) 38 with bkg(listen_cmd, exit_wait=True) as nc: 39 wait_port_listen(port) 40 41 cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.baddr}:{port}", 42 shell=True, host=cfg.remote) 43 ksft_eq(nc.stdout.strip(), test_string) 44 45 test_string = ''.join(random.choice(string.ascii_lowercase) for _ in range(65536)) 46 with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as nc: 47 wait_port_listen(port, host=cfg.remote) 48 49 cmd(f"echo {test_string} | socat -t 2 -u STDIN TCP:{cfg.remote_baddr}:{port}", shell=True) 50 ksft_eq(nc.stdout.strip(), test_string) 51 52def _set_offload_checksum(cfg, netnl, on) -> None: 53 try: 54 ethtool(f" -K {cfg.ifname} rx {on} tx {on} ") 55 except: 56 return 57 58def _set_xdp_generic_sb_on(cfg) -> None: 59 test_dir = os.path.dirname(os.path.realpath(__file__)) 60 prog = test_dir + "/../../net/lib/xdp_dummy.bpf.o" 61 cmd(f"ip link set dev {remote_ifname} mtu 1500", shell=True, host=cfg.remote) 62 cmd(f"ip link set dev {cfg.ifname} mtu 1500 xdpgeneric obj {prog} sec xdp", shell=True) 63 64 if no_sleep != True: 65 time.sleep(10) 66 67def _set_xdp_generic_mb_on(cfg) -> None: 68 test_dir = os.path.dirname(os.path.realpath(__file__)) 69 prog = test_dir + "/../../net/lib/xdp_dummy.bpf.o" 70 cmd(f"ip link set dev {remote_ifname} mtu 9000", shell=True, host=cfg.remote) 71 ip("link set dev %s mtu 9000 xdpgeneric obj %s sec xdp.frags" % (cfg.ifname, prog)) 72 73 if no_sleep != True: 74 time.sleep(10) 75 76def _set_xdp_native_sb_on(cfg) -> None: 77 test_dir = os.path.dirname(os.path.realpath(__file__)) 78 prog = test_dir + "/../../net/lib/xdp_dummy.bpf.o" 79 cmd(f"ip link set dev {remote_ifname} mtu 1500", shell=True, host=cfg.remote) 80 cmd(f"ip -j link set dev {cfg.ifname} mtu 1500 xdp obj {prog} sec xdp", shell=True) 81 xdp_info = ip("-d link show %s" % (cfg.ifname), json=True)[0] 82 if xdp_info['xdp']['mode'] != 1: 83 """ 84 If the interface doesn't support native-mode, it falls back to generic mode. 85 The mode value 1 is native and 2 is generic. 86 So it raises an exception if mode is not 1(native mode). 87 """ 88 raise KsftSkipEx('device does not support native-XDP') 89 90 if no_sleep != True: 91 time.sleep(10) 92 93def _set_xdp_native_mb_on(cfg) -> None: 94 test_dir = os.path.dirname(os.path.realpath(__file__)) 95 prog = test_dir + "/../../net/lib/xdp_dummy.bpf.o" 96 cmd(f"ip link set dev {remote_ifname} mtu 9000", shell=True, host=cfg.remote) 97 try: 98 cmd(f"ip link set dev {cfg.ifname} mtu 9000 xdp obj {prog} sec xdp.frags", shell=True) 99 except Exception as e: 100 cmd(f"ip link set dev {remote_ifname} mtu 1500", shell=True, host=cfg.remote) 101 raise KsftSkipEx('device does not support native-multi-buffer XDP') 102 103 if no_sleep != True: 104 time.sleep(10) 105 106def _set_xdp_offload_on(cfg) -> None: 107 test_dir = os.path.dirname(os.path.realpath(__file__)) 108 prog = test_dir + "/../../net/lib/xdp_dummy.bpf.o" 109 cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True) 110 try: 111 cmd(f"ip link set dev {cfg.ifname} xdpoffload obj {prog} sec xdp", shell=True) 112 except Exception as e: 113 raise KsftSkipEx('device does not support offloaded XDP') 114 cmd(f"ip link set dev {remote_ifname} mtu 1500", shell=True, host=cfg.remote) 115 116 if no_sleep != True: 117 time.sleep(10) 118 119def get_interface_info(cfg) -> None: 120 global remote_ifname 121 global no_sleep 122 123 remote_info = cmd(f"ip -4 -o addr show to {cfg.remote_addr_v['4']} | awk '{{print $2}}'", shell=True, host=cfg.remote).stdout 124 remote_ifname = remote_info.rstrip('\n') 125 if remote_ifname == "": 126 raise KsftFailEx('Can not get remote interface') 127 local_info = ip("-d link show %s" % (cfg.ifname), json=True)[0] 128 if 'parentbus' in local_info and local_info['parentbus'] == "netdevsim": 129 no_sleep=True 130 if 'linkinfo' in local_info and local_info['linkinfo']['info_kind'] == "veth": 131 no_sleep=True 132 133def set_interface_init(cfg) -> None: 134 cmd(f"ip link set dev {cfg.ifname} mtu 1500", shell=True) 135 cmd(f"ip link set dev {cfg.ifname} xdp off ", shell=True) 136 cmd(f"ip link set dev {cfg.ifname} xdpgeneric off ", shell=True) 137 cmd(f"ip link set dev {cfg.ifname} xdpoffload off", shell=True) 138 cmd(f"ip link set dev {remote_ifname} mtu 1500", shell=True, host=cfg.remote) 139 140def test_default(cfg, netnl) -> None: 141 _set_offload_checksum(cfg, netnl, "off") 142 _test_v4(cfg) 143 _test_v6(cfg) 144 _test_tcp(cfg) 145 _set_offload_checksum(cfg, netnl, "on") 146 _test_v4(cfg) 147 _test_v6(cfg) 148 _test_tcp(cfg) 149 150def test_xdp_generic_sb(cfg, netnl) -> None: 151 _set_xdp_generic_sb_on(cfg) 152 _set_offload_checksum(cfg, netnl, "off") 153 _test_v4(cfg) 154 _test_v6(cfg) 155 _test_tcp(cfg) 156 _set_offload_checksum(cfg, netnl, "on") 157 _test_v4(cfg) 158 _test_v6(cfg) 159 _test_tcp(cfg) 160 ip("link set dev %s xdpgeneric off" % cfg.ifname) 161 162def test_xdp_generic_mb(cfg, netnl) -> None: 163 _set_xdp_generic_mb_on(cfg) 164 _set_offload_checksum(cfg, netnl, "off") 165 _test_v4(cfg) 166 _test_v6(cfg) 167 _test_tcp(cfg) 168 _set_offload_checksum(cfg, netnl, "on") 169 _test_v4(cfg) 170 _test_v6(cfg) 171 _test_tcp(cfg) 172 ip("link set dev %s xdpgeneric off" % cfg.ifname) 173 174def test_xdp_native_sb(cfg, netnl) -> None: 175 _set_xdp_native_sb_on(cfg) 176 _set_offload_checksum(cfg, netnl, "off") 177 _test_v4(cfg) 178 _test_v6(cfg) 179 _test_tcp(cfg) 180 _set_offload_checksum(cfg, netnl, "on") 181 _test_v4(cfg) 182 _test_v6(cfg) 183 _test_tcp(cfg) 184 ip("link set dev %s xdp off" % cfg.ifname) 185 186def test_xdp_native_mb(cfg, netnl) -> None: 187 _set_xdp_native_mb_on(cfg) 188 _set_offload_checksum(cfg, netnl, "off") 189 _test_v4(cfg) 190 _test_v6(cfg) 191 _test_tcp(cfg) 192 _set_offload_checksum(cfg, netnl, "on") 193 _test_v4(cfg) 194 _test_v6(cfg) 195 _test_tcp(cfg) 196 ip("link set dev %s xdp off" % cfg.ifname) 197 198def test_xdp_offload(cfg, netnl) -> None: 199 _set_xdp_offload_on(cfg) 200 _test_v4(cfg) 201 _test_v6(cfg) 202 _test_tcp(cfg) 203 ip("link set dev %s xdpoffload off" % cfg.ifname) 204 205def main() -> None: 206 with NetDrvEpEnv(__file__) as cfg: 207 get_interface_info(cfg) 208 set_interface_init(cfg) 209 ksft_run([test_default, 210 test_xdp_generic_sb, 211 test_xdp_generic_mb, 212 test_xdp_native_sb, 213 test_xdp_native_mb, 214 test_xdp_offload], 215 args=(cfg, EthtoolFamily())) 216 set_interface_init(cfg) 217 ksft_exit() 218 219 220if __name__ == "__main__": 221 main() 222